<style>
    nav {
        border-bottom: 1px solid #333;
        padding: 10px 0 20px;
    }
    
    nav .container {
        width: 1260px;
        margin: 0 auto;
    }
    
    nav .nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    nav .brand {
        width: 180px;
        height: 50px;
        background-image: url('/logo.png');
        background-size: contain;
        background-position: center left;
        background-repeat: no-repeat;
    }
    
    li {
        list-style: none;
    }
    
    nav .wrap-menu {
        display: flex;
    }
    
    nav .wrap-menu a,
    div {
        font-size: 16px;
        font-weight: 600;
        margin-left: 20px;
        color: #000;
        text-decoration: none;
    }
    
    nav .wrap-menu a:hover {
        color: orange;
    }
</style>

<nav>
    <div class="container">
        <div class="nav">
            <a href="/adminindex">
                <div class="brand"></div>
            </a>
            <div class="wrap-menu">
                <a href="/adminindex/edit">编辑</a>
                <a href="/adminindex/editadd">更改口罩库存</a>
                <a href="/admin/logout">退出系统</a>
            </div>
        </div>
    </div>
</nav>